Feature/add laser scan data

[RavisankarSelvaraju]

Add a functionality to send laserscan data between ROS2 and ROCK

[planthaber]

Good addition, can you add some fields to the LaserScan type to make it also compatible with the DepthMap type (2-dimenmsional LaserScan)? No need to add the conversion yet)

https://github.com/rock-core/base-types/blob/master/src/samples/DepthMap.hpp

• timestamp
• uint vertical_size
• uint horizontal_size
• y angle resolution
• repeated float for remission values

For single lines, as in your current LaserScan massage the vertical_size can just be 0, horizontal_size =1;

[RavisankarSelvaraju]

The timestamp is already included in the header msg which is included in the laserscan msg so i did not include that in the updated LaserScan msg, if it is particularly needed, i can add that too.
Also i changed the old angle_resolution to horizontal_angle_resolution
instead of y angle resolution, i added vertical_angle_resolution to be more in line with the horizontal and vertical size

[planthaber]

Didn't see the header ;-)